In the Scale Tool Settings window, you can select two ways to scale keys in the graph view. To display the Scale Tool Settings window, double click the Scale Tool icon when the Graph Editor is the active window.
For more information, see Scale keys and Scale curves.
Select
Transformation Tools > Scale Keys Tool >
to open the following
Scale Key Settings.
Set one of the following options:
When on, the Scale Keys Tool affects only selected keys. When off, Scale Keys Tool affects all keys.
You can also select
Edit > Transformation Tools > Scale Keys >
to open the
Scale Key Tool options window. See
Scale Key Options.